"Unfortunately, we had a very tragic incident this morning at Reynolds High School: One student is deceased as a result of a lone gunman who entered the school," said Troutdale Police Chief Scott Anderson. "The lone gunman is also deceased at the scene."

Police have not released the name of the gunman, a former Reynolds student, according to law-enforcement sources. The victim, Hoffman, was a 14-year-old Reynolds soccer player.

Witnesses have said the shooting took place in or near the school gymnasium, a separate building, and that the sound of several gunshots sent teachers running through the halls, yelling at students to get into classrooms to hide.

Greg Fernandes' son was in the gym when the shooting started. "He was in there for PE and thought it was fireworks until they didn't stop and people started running," Fernandes said. "That's when he ran to the main building."

View full sizeJune 10, 2014 - Parents and students from Reynolds High School reunite in the parking lot at Fred Meyer. Beth Nakamura/ The Oregonian

Students say the gunman ran from the gym to a bathroom.

Teachers hustled students into classrooms and did what they could to lock and bar doors. They turned off lights, clustered away from windows and, in some cases, moved tables against the walls facing school hallways.

Was anyone else involved? Early reports suggested there were three people involved, but police now say a "lone gunman" was responsible.

Anderson, the Troutdale police chief, said another person was taken into custody during the evacuation when police found a gun in their possession. Police do not believe that person was involved in the shooting, Anderson said.

Was anyone else injured? A track coach and physical education teacher, Todd Rispler, was grazed on the hip by a bullet. Despite being injured, Rispler then managed to make his way back to the office and initiate the school lockdown procedure.

What happens next? After being led from school with their hands on their heads, Reynolds students were bused from school to a Fred Meyer grocery store on Northeast Glisan Street in Wood Village.

Crisis counselors will be at Mount Hood Community College from 7 a.m. to 7 p.m. Wednesday.

School at the high school is canceled Wednesday. Other Reynolds district campuses will be open.

Seniors are scheduled to graduate Thursday.

What is security like at Reynolds? For a school of this size -- some 2,700 -- Reynolds security is comparatively light. The school has several police officers on campus, but many potential entrances.

"You can really go in through any door, and no one is going to stop you," said senior Adrian Tapia, 18 "Anyone can walk in through any door. Shouldn't people be more cautious about that?"

The Reynolds homecoming dance was locked down and then cancelled last fall after police received reports of a man carrying a rifle nearby.

What were things like at Reynolds Tuesday morning before the shooting? Relaxed. The 400 seniors finished classwork last week, and most were not on campus. Other students arrived at staggered times due to final exams. Students said it seemed like a normal morning until just after 8 a.m., when people close to the gym heard gunshots and an assistant principal came over the loudspeakers announcing a lockdown. He instructed teachers to lock the classroom doors, turn off the lights and move classes to a side of the room where their students wouldn't be seen.